Door for silos and the like.



APPLICATION FILED NOV. 8. I912.

Patentd Nov. 30, 1915.

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EMIL A. BRANDENBURG, 0F VVAVERLY, IOWA.

DOOR FOR SILOS AND THE LIKE.

Specification of Letters Patent.

Patented Nov. 39, 1915.

Application filed November 8, 1912. Serial No. 730,190.

To all whom it may concern:

Be it known that I, EMIL A. BRANDEN- Bone, a citizen of the United States, residing at Waverly, in the county of Bremer and State of Iowa, have invented new and useful Improvements in Doors for Silos and the like, of which the following is a specification.

My invention relates to an improvement in doors, particularly adapted for use with stave silos.

Its object is to supply eflicient means adapted to take up expansion and contraction in the lumber of which the door is composed and to facilitate the hanging, opening and locking of said door.

Because of the conditions under which they are used, all parts of wooden silos expand and contract to a considerable extent. The expansion is greatest when the structure is filled with semi-liquid ensilage, while the maximum contraction takes place when the silo is empty in summer. This expansion and contraction, of course, affects the doors and difficulty is encountered in securing an air-tight closure in conjunction with ease in opening and closing. My invention is intended to efficiently meet these conditions in practice and at the same time to provide a door which can be easily removed from the silo, and when attached can be thrown back to utilize the entire area of the opening.

In the drawings, Figure 1 is an elevation illustrating my improved device hung in the door opening of a silo; Fig. 2 is a sectional view of the same taken on the line 22 of Fig. 1, and Fig. 3 is a detail end elevation of the door hanger.

Referring to the accompanying drawings, I have used the reference numeral 9 to indicate the door jambs, which may be formed by the silo staves, 10 cross-braces and 11 supplementary cross-braces of the door opening. The door 12 for this opening is furnished with a hanger 13 mounted upon the bearings 14 on one of said jambs. Cleats 15 bind the timbers of the door together and looking or clamping levers 16 on said cleats secure the door in closed position.

The hanger 13 consists of a body portion 17 formed with arms 18 and braces 19 between said body and arms. An upwardly extending pin 13 is formed at the end of each arm 18 and similar downwardly extending pins 13 are formed on the body portion 17 said pins being arranged one at standards.

the top and one at the bottom of said body and ofiset therefrom at right angles to the arms 18. The bearings 14, adapted to receive the pins 13 of said hanger, are secured in any suitable manner to the jambs 9 to form mountings for the hanger, said hanger being adapted to swing upon said bearings and to be detached therefrom.

The door cleats 15 bind together the lumber, preferably tongued and grooved, of which the door is composed. These cleats, terminating in standards 20, are provided with perforated ears or bearings 21, and are formed with elongated slots 22 therein. Said cleats are arranged across the grain of the door timbers and are secured to said timbers by screws23 passing through said slots. The bearings 21 on said cleats receive the pins 13 on the arms 18 of the hanger 13, and form a pivotal and detachable mounting for the door on said hanger. The slotted arrangement of the screws 23 in the cleats 15 permits self-adjustment of the door timbers with respect to said cleats as said timbers swell, and also permits readjustment of the same to bring the parts together after shrinkage has taken place. Means for clamping the door to the door frame is pro vided and consists of hand levers 16 which are pivotally attached by bolts 25 to the standards 20, on the cleats 15. These bolts 25 are anchored in the timbers of the door and extend through perforations 22 in said The hand'levers 16 are formed with camsurfaces 26, which surfaces at one side of the door bear against suitable plates 27 on one of the jambs 9 and at the opposite side of said door bear against the hanger 13 which is connected to-the other jamb through the medium of the pins 13? and bearings 14 as above described. When these levers 16 are in unlocked position, their ends or handles extend horizontally inward and are supported by lugs 28 which engage companion stop lugs 29 on the standards 20.

In use the swelling of the boards which compose the door is compensated for by movement of the screws 23 and bolts 25 in the slots 22 of the cleats 15. These screws and bolts may be loosened to permit the taking upof the boards after the same become contracted and again tightened to bind said boards together. The door may be moved to position clear of the door opening by swinging the hanger in the bearings 11 and turning the door on said hanger or it may be removed from the door frame by detaching the cleats from the hanger or the hanger from the bearings 14. In locking the door, the handlevers 16 on one side of the door are moved to position engaging the adjacent jamb and the levers on the other side are moved to position engaging the hanger 13, the force exerted by the clamping of said levers being received upon the cleats 15.

:3 a hanger hinged to the frame having its free end hinged to the door, the hanger having an opening adjacent said frame, and a handle pivoted at one end to the door and movable through said opening when the door is closed, said handle having its free end offset to swing across that portion of the hanger adjacent the frame, and said handle having a web within the bend formed by the offset portion and provided with an oblique cam edge to ride onto said portion of the hanger when the handle is swung, whereby the door is drawn toward the hanger so as to fit tightly within the frame.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

EMIL A. BRANDENBURG. Witnesses:

O'r'ro BRANDENBURG, AUGUST BRANDENBURG.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

